The C75 Combustion Efficiency Analyzer helps technicians accurately dial in residential and light commercial furnaces, boilers and hot water heaters to optimum efficiency. The C75 offers the advantage of CO analysis for technicians who require it. The new innovative multimeter style rotary selector, allows quick access to parameters. Find Out Why America's Utility Companies and Heating Maintenance Technicians Are Switching To The New C75! Three year limited warranty (Two year limited warranty on sensors).
The C50/C75 enables HVAC professionals to accurately test and service all residential combustion appliances. The extra large backlit LCD displays two parameters at one time. Easily choose the desired combustion parameter with the rotary selector. The optional printer allows you to print your readings to document your test results.
For technicians who are required to diagnose and repair heating equipment, the C75 also has a CO sensor.
Features include
- Choose combustion parameter with a rotary selector
- Measure flue temperature and oxygen (C75: also carbon monoxide)
- Calculates carbon dioxide, gross & net efficiency, and excess air ( C 75: also carbon monoxide air free)
- Large backlit LCD, 2 line display
- Protected boot with an integral magnet
- 1 ppm accuracy
- Infrared printer port
- User programmable header
- 16 position memory
Controls and Indicators
- Display
- Infrared Printer Port
- ON/OFF: Turns analyzer ON and OFF.
- Print/Back-Light: Print data (Press and hold until “PRINTING” appears) / Hold to toggle back-light ON or OFF.
- Pump/Top Line: Turns pump ON and OFF / Hold to scroll through top line display (also selectable through menu).
- | | Hold/Store: Freezes reading on display. Entire display flashes. Press and hold for 2 seconds to store data in memory.
- Rotary Selector
- Particle Filter
- Water Trap
- Analyzer Connections
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Main Display Parameters
O2 : Oxygen reading in percentage (%).
Tf : Te m p e rature is measured by the flue gas probe in Centigrade or Fahrenheit. Will show ambient temperature after fresh air calibration and “- - - -” if the flue probe is disconnected.
CO : Carbon Monoxide reading displayed in ppm (parts per million). “- - - -” is displayed if there is a fault with the CO sensor or the instrument has not set to zero correctly, switch off instrument and try again.
COa : Carbon Monoxide air-free reading referenced to an oxygen level of 0%. Do not confuse this reading with the actual CO reading as detailed above.
CO2 : Carbon Dioxide calculation determined by the type of fuel. This only shows a reading when a combination test is being carried out. “- - - -” is displayed while in fresh air.
^T : Net temperature calculated by deducting the
AMBIENT (or
INLET) temperature from the measured
FLUE temperature. Displays in either Centigrade (°C) or Fahrenheit (°F) and will display “- - - -” if the flue probe is not connected.
EFF (G): Combustion efficiency calculation displayed in percentage. Gross (G) or Net (N) can be set (see MENU). The calculation is determined by the fuel type and uses the calculation in British Standard BS845. The efficiency is displayed during a combustion test, “- - - -” is displayed while in fresh air.
XAIR % : Excess air calculated from the measured oxygen and type of fuel used. Displays reading during a combustion test. “- - - -” is displayed while in fresh air.
AMB : Boiler air INL ET temperature used to calculate the NET temperature
CO/CO2 : The
CO/CO2 ratio is the ratio of measured CO divided by calculated CO2 .